﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace May_20_2021
{
    class Sub:Calculate //减法
    {
        public override void DisplayResult()
        {
            base.DisplayResult();
            Console.WriteLine("{0}-{1}={2}",d,e,d-e);
        }
    }
}
